No delivery

I'm so disappointed with speed services, I sent a parcel using counter to counter services. I sent the parcel around 12h30 on the 31st of March at Randburg post office but it still hasn't reached its destination. If I track it on the website site it was last tracked on the 31st of March at 19h36. It was supposed to reach its destination on the 1st of April, it's been a week now and the parcel is nowhere to be found. Is it a speed service or snail service? When I call the customer care I hold for 15min with no answer. My tracking number is TC***ZA<br> My e-mail address is [Email Removed]